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A non-photorealistic rendering method and device in watercolor style

A non-realistic and stylized technology, applied in 2D image generation, image data processing, instruments, etc., can solve the problems of inaccurate edge extraction, unclear outline, and delineation, etc., to achieve clear line outline, clear color, calculation fast effect

Inactive Publication Date: 2017-05-17
深圳市云宙多媒体技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to propose a non-photorealistic rendering method of watercolor style, aiming at solving the problem that the outlines are not clear enough or even lost when processing many images in the traditional watercolor style method in the prior art, and the edge extraction is not accurate. Causes the problem of excessive delineation

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  • A non-photorealistic rendering method and device in watercolor style
  • A non-photorealistic rendering method and device in watercolor style
  • A non-photorealistic rendering method and device in watercolor style

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Embodiment 1

[0031] figure 1 It is a flow chart of a watercolor-style non-realistic rendering method in a preferred embodiment of the present invention; the method includes the following steps:

[0032] S101, acquire image A',

[0033] S102, performing normalization processing on image A' to obtain image A;

[0034] S103, performing grayscale processing on image A to obtain image a;

[0035] a(i,j)=0.299*A(i,j) R +0.587*A(i,j) G +0.114*A(i,j) B ;

[0036] Among them: i is the i-th row of each image; j is the j-th column of each image; A(i,j) R is the red component value of the pixel (i,j) of image A, A(i,j) G is the green component value of the pixel (i,j) of image A, A(i,j) B Be the (i, j) point pixel blue component value of image A; a(i, j) is the (i, j) point pixel value of image a; S104, Gaussian blur is performed on image a to obtain image b;

[0037] The size of the Gaussian blur template is 5×5, the variance σ=1.5, and the template is as follows:

[0038]

[0039] Use t...

Embodiment 2

[0055] figure 2 It is a structural diagram of a watercolor-style non-realistic rendering device in a preferred embodiment of the present invention, and the device includes:

[0056] Image acquisition module, used to acquire image A',

[0057] A normalization processing module, used to perform normalization processing on the image A' to obtain the image A;

[0058] A grayscale processing module, configured to perform grayscale processing on image A to obtain image a;

[0059] a(i,j)=0.299*A(i,j) R +0.587*A(i,j) G+0.114*A(i,j) B ;

[0060] Among them: i is the i-th row of each image; j is the j-th column of each image; A(i,j) R is the red component value of the pixel (i,j) of image A, A(i,j) G is the green component value of the pixel (i,j) of image A, A(i,j) B is the (i, j) point pixel blue component value of image A; a(i, j) is the (i, j) point pixel value of image a;

[0061] The Gaussian blur module is used to perform Gaussian blur on the image a to obtain the imag...

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Abstract

The invention discloses a water color style non-photorealistic rendering method and device, and belongs to the field of image processing. The water color style non-photorealistic rendering method includes the steps of obtaining an image c by extracting the outline of an image, meanwhile, converting the image into an image f of an HIS space from an RGB space, then removing I components in the image f, enabling a corresponding point pixel value in the image c to be multiplied by a specific coefficient to serve as an I component value of the corresponding pixel in the image f to form a new image g, and then converting the image g from an HSI space to the RGB space to obtain an image b. According to the water color style non-photorealistic rendering method, the water color style of the image can be achieved, the high simulated effect is achieved, the color is bright and limpid, the line outline is clear, the calculating speed is high, and real-time implementation can be achieved.

Description

technical field [0001] The invention relates to the field of non-realistic image rendering, in particular to a watercolor-style non-realistic rendering method and device. Background technique [0002] Non-photorealistic rendering is a new research field combining computer technology and painting art. Different from traditional realistic graphics rendering, non-photorealistic graphics rendering does not seek to generate images similar to photos, but expresses rendering by omitting details irrelevant to graphics, simplifying the shape of objects, and even exposing hidden details the intention of the author. As far as color painting itself is concerned, it has two basic characteristics: one is that most of the pictures have a transparent visual feeling; the other is the fluidity of water in the painting process. The transparency of the pigment makes the watercolor painting produce a clear surface effect, while the fluidity of the water produces a dripping, natural and free an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/00
Inventor 秦文礼
Owner 深圳市云宙多媒体技术有限公司
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